Improvement in plows



S. MEAD.

Plow. v l

Patented Sept. l5 1863 cf ffm( MFETERS. PHOTO NOGRAPH'ER. WASPINGTON, DC4 UNITED STATES `"PATENT OFFICE.

. SOLOMON MEAD, OF NEW HAVEN, CONNECTICUT.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent N0. 39,943. dated Septemberl5, 1863.

To all 'whom it may concern:

Be it known that I, SOLOMON MEAD, of the city and county of New Havenfinthe State of Connecticut, have invented new and useful Improvements inthe Construction of Plows; and I do hereby declare that the following isa full and exact description thereof, reference being had to theaccompanying drawings and letters of reference marked thereon, in whichdrawings- Figure l is a perspective vieur of a plow. Fig. 2 representsthe t'rustu n1 of a cone, serving to illustrate the form or plan ofconstructing the mold-board or turning-surface of the plow.

The nature of my lnvention consists in an improved form given to theouter or turning surface of the plow, as hereinafter explained.

It' the frustum of a cone is applied to the mold-board with its smallend to the rear of the mold-board, their surfaces corresponding, (so faras the mold-hoard cxtends,) it will show the plan of constructing themold-board or turning-surface of the plow.

That others skilled in the art may be able to make and use myinvention,I will proceed to describe its construction and operation.

In Fig. l, A represents the mold-board or turning-surface of the plow. Brepresents the plowshare, and is attached to the mold-board in the usualway by a bolt. p

Fig. 2 represents the frustuin of a cone, C, which may be made more orless conical, as desired.

The mold-board A is so shaped in its construction as to t the outersurface of a frustuIn of a cone, C, when respectively applied to eachother.

The upper surface of the plowshare B partakes generally in the curve ofthe adjacent part ot' the mold-hoard, and is supplied with a colter whenused for plowing turf and the like.

The objects sought or gained in the abovedescribed form of the plow aretwofold, viz: First, a very easy draft is secured by using the large endof the cone foremost in the plow, thus making the entering wedge of theplow for the separation of the furrow-slice-a very gentle and easyone;second, the short and complete turn which by this plan is given to theback and upper part otl the inold-bonrd is believed to accomplish a morecomplete and perfect turning of the furrowslice than any other plan nowin use.

The axis of the plow, as determined by the corresponding axis ot' thecone when applied to the plow, may run parallel with or at any anglewith the base or draft line of the plow.

The feature of novelty as described and pertaining to this plow is theconical shape of the outer or'turning surface ofthe mold-board A, whilethe saine general curve is extended to the larger part of the share B.

I claim- .The construction of the mold-board or turningsurface ot' plowsto correspond with a section or segment ot' a cone, substantially asbefore described, and for the purposes set forth.

SOLOMON MEAD.

Witnesses:

E. I. SANFORD, CHARLES FAERIQUE.

